Here is a quick list of why Raw Pixelmon is the best choice to choose:

Our server is anazing! A shiny Pokemon when you first join We hold Pokemon Tournaments every week! Prizes include Shiny Pokemon and items!
We have WonderTrade and Evs / Ivs!
Pokemon Riding, Legendary Spawning and Cloning Machines are enabled!
Keep Inventory is on meaning you wont lose items!
Wild Pokemon wont attack until you attack them! So your ev training wont be ruined! There are player shops you can buy! (soon to be added) Staff who are mature and helpful and will try and assist you whenever you need it!